Impact of terminal group on azobenzene liquid crystal dimers for photo-responsive optical storage devices
- Title
- Impact of terminal group on azobenzene liquid crystal dimers for photo-responsive optical storage devices
- Creator
- Ranjitha B.S.; Sandhya Kumari D.; Shetty A.; Shanker G.; Alaasar M.; Pashameah R.; Hegde G.
- Description
- Three new series of photo responsive dimers bearing different terminal functional groups (-CN, -COOEt, -OMe) and variable aliphatic spacers have been synthesized and investigated in detail. The molecular structures of the new materials were proved using different spectroscopic techniques and their liquid crystal self-assembly was characterized using differential scanning calorimetry (DSC), polarized light microscope (POM) and X-ray diffraction (XRD). Moreover, their photo switching behaviour was investigated in details in solution. The results revealed that, almost all members of the dimeric materials are mesomorphic exhibit either nematic or both smectic A and nematic phases. Under UV illumination the materials show interesting photo-switching properties, reaching a photo-stationary state in 40 s and a thermal back-relaxation time of approximately 35 h in solution. Finally, a fabricated device authenticates the potential of the reported materials for optical storage devices. 2023 Elsevier B.V.
- Source
- Journal of Molecular Liquids, Vol-383
- Date
- 2023-01-01
- Publisher
- Elsevier B.V.
- Subject
- Optical storage device; Photoisomerization; Photoresposive LC dimers; Self-assembled H aggregates
- Coverage
- Ranjitha B.S., Department of Chemistry, Bangalore University, Jnana Bharathi Campus, Bengaluru, 560056, India; Sandhya Kumari D., Department of Chemistry, Bangalore University, Jnana Bharathi Campus, Bengaluru, 560056, India; Shetty A., Department of Chemistry, CHRIST (Deemed to be University), Hosur Road, Bengaluru, 560029, India, Centre for Advanced Research and Development (CARD), CHRIST (Deemed to be University), Hosur Road, Bengaluru, 560029, India; Shanker G., Department of Chemistry, Bangalore University, Jnana Bharathi Campus, Bengaluru, 560056, India; Alaasar M., Department of Chemistry, Faculty of Science, Cairo University, Giza, 12613, Egypt; Pashameah R., Department of of Chemistry, Faculty of Applied Science, Umm Al-Qura University, Makkah, 24230, Saudi Arabia; Hegde G., Centre for Advanced Research and Development (CARD), CHRIST (Deemed to be University), Hosur Road, Bengaluru, 560029, India
- Rights
- Restricted Access
- Relation
- ISSN: 1677322; CODEN: JMLID
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Ranjitha B.S.; Sandhya Kumari D.; Shetty A.; Shanker G.; Alaasar M.; Pashameah R.; Hegde G., “Impact of terminal group on azobenzene liquid crystal dimers for photo-responsive optical storage devices,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 25, 2025, https://archives.christuniversity.in/items/show/14144.